Shuttle



3 v H. A. DAVOL 1,880,862

7 SHUTTLE Filed Jan... 11, 1932 fi m w Mia/W ATTORNEY Patented Oct. 4, 1932 UNiTEn sTATEfs issaaz earar tries .HAR-RY ALTON DAVOL, F METHUEN, MASSACHUSETTS, ASSIGNOR TO U. .S. BOBBIN & SHUTTLE COMPANY 1929, 0F PROVIDENCE, RHODE ISLAND, A CORPORATION OF RHODE ISLAND SHUTTLE Application filed January 11, 1932. Serial No. 585,876.

,WVhere a shuttle block is used, ordinarily there is a downwardly extending horn adjoining a vertically extending thread pin, the thread from the bobbin passing at right angles around the pin and behind the horn thence out through an eyeinthe wood. At

the front and back of this eye in the wood,

it is necessary to place eye pinsfso that the thread will not catch in the wood.

As the shuttle binders wear the shuttle on the side of the eye at front and back, after a while these eye pins are exposed and cause trouble.

In this device, there are no eye pins in the 'wood and if the wood is worn down, it merely exposes the hard metal ofthe block.

The back pin can be positioned in the metal of the shuttle block, butto allow the thread to get by, the front pin must be ordinarily in the wood. I

It is desirable when once the thread is in the eye that it should remain there and should be more or less locked in position."

This device consists principally of a metal shuttle block of malleable iron hardened around the eye and preferably plated with copper and nickel and then overplated with chromium whereby a rustless very hard surface is provided.

Preferably, there is no horn but thefrontsurface ofrithe front or nose ofthe shuttle block from the tip to the side of the block and -the front edge thereof extends down and back to an'eye slot which extends up and back to an eye which runs from the side transversely and laterally to a passage-which connects with the usual threading slot.

In my construction, especially if my block is made of iron or steel, chromium plated, no

eye pins are needed, the thread easily threads i or slips into the eye and when once in cannot easily get out or unthread.

Moreover, ifa loop is cast around the nose, it will slip or will be cast off, by the pull of the thread.

--Preferably also I use a back hook-which enters a recesstogether with friction devices to prevent unthreading by loops being thrown forward, to hold the thread down at the'back-and up at the front.

'I clalm, however, to be the inventor of a shuttle eye block of ferrous metal preferably of malleable iron as it is a tough shock re- S1S'CIIIg' mQf/al, plated with chromium, with a'conical nose and acase hardened 'wing I I through which extends a side eye into the lpwer part of which enters an eye threading s ot.

Preferablythis eye slot is so cut as to leave a' tongue guard at the bottom inside of the eye and back of the thread pin and preferably there are at the outside of the wing, thread grooves which enter the eye at front and back.

I prefer to have a friction member at the front which is high relative to the side eye, an-eye opening inthe wood the top edge of which is above the bottom of the eye threading slot, and also a vertical thread pin positioned a little forward of the-eye as these all permit easy threading but all help, with the tongue guard and eye slots, to hold or look the thread in place and prevent it from unthreading when the shuttleis running.

The bottom position of the eye slot, the forward position of the thread pin, the thread grooves, the high friction and the position of the top edge of the eye opening in "the wood all contribute towards keeping the thread in the eye when once threaded,'but some or all may be omitted.

In the drawing, Fig. 1 is a plan view of the end of a shuttle with my device in'place. Fig.2 is an enlarged side elevation showing the side of ashuttle and part of the shuttle block with theside eye. 7 I

Fig. 3 is a front elevation of the shuttle block in place in a. shuttle, the body, of the shuttle being shown in section as on the line 3-3 of Fig. 2.

. scale than Fig. 5.

Fig. 4 is an elevation from the back of the shuttle block removed from the shuttle.

Fig. 5 is an elevation from the outlet side or the side of the eye of a shuttle block removed from a shuttle.

Fig. 6 is a side elevation of a shuttle block removed from the shuttle from the opposite side from Fig. 5 on a reduced scale. Fig. '7 is a bottom view of a shuttle block 'removedfrom the shuttle body. f Fig. 8 is a detail of the inner end of the side eye as viewed from the right on the lin 88 of Fig. 3.

Fig. 9 is a fragmentary sectional viewas if looking down on the line 99 of 3.

Fig. 10 is .a .view similar to Fig.9 of a modification.

Fig. 11 is a view similar to Fig. 1 of another modification.

Fig. 12 isa view similar to Fig. 2 of another modification.

Fig. 13 is a side elevation similar to Fig. 5 of another modification of the side eye in the block, the block being shown on a smaller In the drawing, A represents the body of a shuttle which is usually now made of wood. Through thisshuttle extends abobbin chamber 11 in which a bobbin such as B is held, such bobbin carrying the thread T. which is to be unwound and then passed out through an eye such as '7 in a metal block S which preferably extends out almost to the outside of a side eye opening 10.

- This block S fits into and is held in a block recess 12 such block having a longitudinal threading chamber 1 which connects with and forms part of a threading chamber with recess 111 in the wood and other parts to be described. g At the front,,the threading chamber extends diagonallybackfrom recess 111 through a connection 13 to the side eye opening 10. The top edge 15 of this connection extends diagonally back then over and down and merges with the front edge of-opening 10. 7 The front wall 16 of this connection preferably slopes down, forward at its end which is nearest the side on which the opening 10 is located. This side I will call the eye side.

9n one side of the'threading chamber 1, there is near the front top aguard 2 which projects out over chamber 1 and at the rear is a vertical recess 3 close toor into which extends a hook 4 from the other or eye side 31. This hook 4 preferably rakes forward. 1

Preferably, I use two cylindrical pieces of felt 40 and 41' in holes 42 and 43, the one 40 being in aihole 42 at the rear end and the one 41 being in a hole 48 which is halfway forward or about in line with the eye and with its top well up near the top of eye 7 to keep the thread T well up from slot 8. 1 y i On' the eye side of block Steward the front is formed a nose 5 which is roughly of conical The inner form extending up, forward and away from the eye side, the point 25 of the nose extending down and under the guard 2.

The front surface 6 of nose 5 extends from the point 25 down and back preferably extending somewhat underthe front edge 15 of the threading block chamber connection, the lower edge 26 of face 6 forming part of the cone which produces nose 5 and being preferably rounded at the bottom 27 close to the outer side of block S.

V This outer side is formed as a wing 20 and is case hardened or otherwise hardened after the block isformed. Between wing 20 and the central web 21, at the front of which is socket 22 for thread pin P, is a secondary passage 9.

Extending from the outside through wing 20 into passage 9, preferably in a position slightly back ofpin P, is the eye 7 which is of cylindrical shape with its endsrounded off to reduce friction and to permit the thread Tto run around pin P and through eye 7 with as little friction as possible. The eye such'as 7 can be round preferably with the thread grooves 23 and 24 on its outside at front. and back. or oval as-at 64 in Fig; 18.

Theprincipal feature of this device is the slot 8 which extends from the outer lower part 27 of the front face-6 of nose 5 diagonally up and back through wing 20 at nearly a tangent into eye 7. The bottom front ed e 26 of nose 5'which slopes down, out and bac 1, permits the usual horn, such as 63 in Fig. 13, to be omitted and serves as a front diagonal edge'guide from the point of the nose to positively guide the thread T into the eye slot 8 and the eye 7. I

' Referring to Figs. 2, 8, 9 and 5, in cutting this slot, I find it convenient to raise the outer edge of the saw so that the outside of eye slot 8 will-not be at a tangent, but slightly above the bottom of eye 7while the inner side, as shown in Fig. 8, will be at a tangent. 7 Such a cutting makes the bottom inside front face of eye 7 into a tongue guard, as shown in Fig. 9, whereby when the thread T passes around the thread pin P, it will run over this guard and while the shuttle is travelling to the right the thread will cross eye slot 8 and pass around the rounded back outside edge 71 of eye 7 and when the shuttle is travelling to the left, the thread T will pass around the outer front rounded edge 72 of e e 7.

y back end 7 3 and the inner front end 74 of eye 7 are also preferablysuitably rounded so that the thread will not catch and all parts where thethread touches are hardened, chromium plated and polished.

While I prefer the construction of eye slot and eye shown in Fig. 9 andthe thread pin P forward of eye 8, I can as shown in Fig. 10 use a block F with a thread pin 59 for thread Tlocated about at the middle of an eye 50,

the front edges 51 and the back edges 54 of which, and in fact the whole eye, are rounded all preferably being chromium plated.

The eye slot 52 is cut upward at a slant as .is 8, but parallel with the axis of eye so that where it emerges, the part 58 serves as a tongue guard over which thread T :moves back and forth without reenterin slot 52.

In threading, when the shuttle is thrown on the first pick, the thread T slips down under guard 2 and runs through the thread, ing chamber 111 out'over the point 520 of the shuttle, as shown by the dotted lines. On the next pick, it slips down under the point of nose 5 down along the bottom edge'27 and then up through slot- 8 into the metal eye 7 where it is securely locked in place.

The top edge 18 of the side eye opening 10 preferably extends up to a point somewhat above the lower end of eye slot 8 and below its upper end so that this acts as an additional lock to the guard 70 thisprotecting the outer end of eye 7 and 70 protecting the inner end.

The nose 5 spreads from its point 25 down and out at 26 over and out at 28 and these with thein-side upper face 29 combine so that apfy loop will quickly slip off or be thrown o As shown in Figs. 10 and 11, the shuttle A may be the same as in Fig. 1 with a block 1* which has athreading chamber '56 with no overhang and with no back hook and with a nose shaped somewhat differently from nose 0.

Many other threading blocks with diiterent forms of threading chambers and with or without back hooks or with or without frictions can be used in connection with my chromium plated shuttle block having a sine eye leading to a passage adjoining the thread pin and with an eye slot which slopes from the bottom outer forward part of the block up and back into such an eye.

With an eye such as 50, or for that matter with any eye, while I preferthat the wood of the side eye opening such as 10 should extend up across the eye slot, thus providing an outside look, I may as shown in Fig. 12 at 100'bring'the top edge'of such an eye opening such as at 100 up to a point just below the entrance to eye slot '52.

As shown in Fig. 13, I may use a block with a nose 61 having an outer forward edge 62 of the shape shown and a born 63 together with an eye '64 with a vertical. eye slot 65 which enters it at the bottom.

I prefer to use a round eye such as 7 with thread grooves 23 and 24 as these with the usual thread channel 19 in the wood tend to keep the thread at the right elevation as the shuttle flies'back and forth. The front end I prefer tough malleable iron which is easily bent and shaped-and by forming it with a wing, this'wing alone can be case harden-ed leaving the rest of the block so tough as to resist the pounding of the picker on the shuttle in the loom.

I claim: 1. Th combination in a shuttle having a body with a side eye opening, a bobbin chanr.

her, a threading chamber in continuationof the bobbin chamber, and a connection between the threading chamber and the side eye opening; of a threading block formed of malleable iron plated with copper and nickel and then with chromium, said block including a longitudinal threading chamber, a web at the front of which is a thread pin socket, a secondary passage between the web and a case hardened wing, and a conical. nosewhich extends from the eye side forward, the front face of the nose extending down and back. a side eye in the block which extends through the Wing into the secondary passage, there'being. on the outside of the wing, narrow thread grooves which. connect with the middle'of the eve at its front and back, an eve slot which extends from the bottom of the front face below the top edge of the side eve opening in the body up and back through the wine into. the bottom of said side eve in such manner,

wh ch is above the bottom of said side eye;

and thread pin positioned in the socket in the web forward o the back edge of the ton ue guard of the side eye.

2. The combination in a shuttle having a body with a side eye opening, a bobbin chamber, a threading chamber in continuationof the bobbin chamber. and a connection between the threading chamber an d, the side eye opening; of a threading block formed of malleable iron plated with copper and nickel and then with chromium, said block including a longitudinal threading chamber, a web at the front of which is thread pin socket, a secondary passage between the web and a case hardened wing, and a'conical nose which extends from the eye side forward, the front face of the nose extending down and back, a side eye in the block which extends through opening;

the wing into the secondary passage, there being, on the outside of the wing, narrow thread grooves which connect with the middle of theeye at its front and'back, an eye slot which extends from the bottom of the front face below the top edge of the side eye opening in the body up and back through the wing into the bottom of said side eye in such manner that a tongue guard is formed with a backward and inward pointing back edge; and a thread pin positioned in the socket in the web forward of the back edge of the tongue guard of the side eye.

3. The combination in a shuttle having a body with a side eye opening, a bobbin chamher, a threading chamber in continuation of the bobbin chamber, and a connection between the threading chamber and the side eye of a threading block formed of malleable iron plated with copper and nickel and then with chromium, said block including a longitudinal threading chamber, a web at the front of which is a thread pin socket,

a secondary passage between the web and a case hardened wing, and a conical nose whichextends from the eye side forward, the front face of the nose extending down and back, a sideeve in the block which extends through the wing into the secondary passage, there being, on the outside of the wing, narrow thread grooves which connect with the middle of the eye at its front and back, an eye slot which extends from the bottom of the front face up and back through the wing into the bottom. of said side eye in such manner that a tongue guard is formed with a back ward and inward pointing back edge; a friction member which. extends across the bottom of the threading chamber substantially opposite'the side eye and having a top face which is above the bottom of said. side eye; and a thread pin positioned in the socket in the web forward of the back edge of the tongue guard of the side eye.

V 4. The combination in a shuttle having a body with a side eye opening, a bobbin chainber, a threading chamber in continuation of the bobbin chamber, and a connection between the threading chamber and the side eye opening; of a threading block formed of malleable iron plated with copper and nickel and then with chromium, said block including a longitudinal threading chamber, a web at the front 'of which is a thread pin socket, a secondary passage between the web and a case hardened wing, and a conical nose which extends from the eye side forward, the front face of the nose extending down and back, a side eye in the block which extends through the wing into the secondary passage, there being, on the outside of the wing, narrow thread grooves which connect with themiddle of the eye at its front and back, an eye slot which extends from the bottom of the front face up and back through the wing into the bottom of said side eye in such manner that a tongue guard is formed with a backward and inward pointing back edge; and a thread pin positioned in the socket in the web forward of the back edge of the tongue guard of the side eye.

5; The combination in ashut-tle having a body with a side eye opening, a bobbin chamber, a threading chamber in continuation of the bobbin chamber, and a connection between the threading chamber and the side eye opening; of a threading block formed of malleable iron plated with copper and nickel and then with chromium, said block including a longitudinal threading chamber, a web at the front of which is a thread pin socket, a secondary passage between the web and a case hardened wing, and a conical nose which extends from the side eye forward, the front face of the nose extending down and back, a side eye in the block which extends through the wing into the secondary passage, there being, from the outside'of the wing, an eye slot which extends from the bottom of the the bobbin chamber, and a connection between the threading chamber and the side eye opening; of a threading block formed of ferrous metal plated with copper and nickel and then with chromium, said block including a longitudinal threading chamber, a web at the front of which is a thread pin socket, a secondary passage between the web and a hardened wing, and a'nose which extends from the eye side forward, the front face of the nose extending down and back, a side eye in the block which extends through the wing into the secondary passage, an eye slot which extends from the bottom of the front face up and back through the wlng into the bottom of said side eye in' such manner thata tongue guard is formed; and a thread pin positioned in the socket 111 the web forward of the back 7 edge of the tongue guard of the side eye,

7. The combination in a shuttle having a body wlth a side eye open ng, a bobbin chamber, a threading chamber in continuation .of

the nose extending down and back, a side eye in the block which extends through the wing into the secondary passage, an eye slot which extends from the bottom of the front face up and back through the wing into the bottom of said side eye; and a thread pin positioned in the socket in the web.

8. A threading block for shuttles formed of ferrous metal plated with copper and nickel and then with chromium, said block including a longitudinal threading chamber, a web at the front of which is a thread pin socket, a secondary passage between the web and a hardened wing, and a nose which extends from the eye side forward, the front face of the nose extending down and back, a side eye in the block which extends through the wing into the secondary passage, an eyev slot which extends from the bottom of the front face up and back through the wing into the bottom of said side eye in such manner that a tongue guard is formed; and a thread pin positioned in the socket in the web forward of the back edge of the tongue guard of the side eye. 7

9. A metal threading block for shuttles formed of ferrous metal with'a longitudinal threading chamber, a web at the front of which is a thread pin socket, a secondary passage between the web and a hardened wing; and anose which extends from the eye side forward, the front face of the nose extending down and back, a side eye in the block which extends through the wing into the secondary passage, an eye slot which extends from the bottom of the front face up and back through the wing into the bottom of said side eye; and a thread pin positioned in the socket in the web.

10. A metal threading block for shuttles formed with a longitudinal threading chamber, a web at the front of which is a thread pin socket, a secondary passage between the web and a wing, and a nose which extends from the eye side forward, the'front face of the nose extending down and back, a side eye in the block which extends through the wing into the secondary passage; and an eye slot which extends from the bottom of the front face up and back through the wing into the bottom of said side eye.

In testimony whereof I affix my signature.

HARRY ALTON DAVOL. 

